Last name توى (Tuy 
, Towey 
, توى 
) , around the world, is a common surname. The cognomen توى is characteristic of Guatemala, where it is quite a common surname, Ireland, where it is quite a rare surname, and Panama. In absolute terms, it is the most numerous in Guatemala, the United States, and Philippines. Much less frequently, توى is the forename as well as the last name.